{"id":68796,"url":"https://alion.io/job/clockwork-senior-software-engineer-time-synchronization","title":"Senior Software Engineer – Time Synchronization","company":{"id":39049,"name":"Clockwork","domain":"clockwork.io","url":"https://alion.io/company/clockwork-io","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":95,"open_postings":6,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":252,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Palo Alto, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":150000,"max":230000,"currency":"USD","period":"year","gross":null,"usd_annual":230000},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"C++","optional":false},{"name":"Linux","optional":false},{"name":"eBPF","optional":true}],"status":"live","first_seen_at":"2026-04-10T22:34:36Z","employer_posted_date":"2026-09-02","last_verified_at":"2026-10-16T21:56:23Z","board_verified":true,"closed_at":null,"days_open":189,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":188},"description":"About Clockwork Systems\nClockwork.io - Software Driven Fabrics to increase GPU cluster utilization\nClockwork Systems was founded by Stanford researchers and veteran systems engineers who share a vision for redefining the foundations of distributed computing. As AI workloads grow increasingly complex, traditional infrastructure struggles to meet the demands of performance, reliability, and precise coordination. Clockwork is pioneering a software-driven approach to AI fabrics by delivering cross-stack observability to catch and quickly resolve problems, workload fault tolerance to keep jobs running through failures, and performance acceleration that dynamically routes and paces traffic to avoid congestion.\nTo learn more, visitwww.clockwork.io.\nAbout the Role \n\n We are seeking a Senior Engineer to lead development of our Core ClockSync systems. This role focuses on building and scaling low-latency, highly accurate time synchronization infrastructure across distributed environments. You will work at the intersection of distributed systems, networking, and systems engineering to ensure correctness, reliability, and performance of time coordination across clusters and services.\nWhat You Will Do\nDesign and implement core time synchronization algorithms and services\nImprove accuracy, drift correction, and fault tolerance of distributed clocks\nBuild globally scalable services that operate under tight latency and consistency constraints\nDevelop observability systems for clock health, skew detection, and anomaly analysis\nOptimize performance at the OS, kernel, and network levels where necessary\nCollaborate with infrastructure, platform, and product teams\nLead technical direction and mentor engineers\nWhat We’re Looking For\n6+ years of experience in systems or distributed systems engineering\nStrong proficiency in C++ and Go\nDeep understanding of distributed systems concepts (consensus, replication, fault tolerance)\nExperience with time synchronization protocols (NTP, PTP) or related domains\nFamiliarity with Linux systems programming and networking stacks\nExperience debugging low-level performance and correctness issues\nStrong problem-solving and design skills\nNice to Have\nExperience with kernel development or eBPF\nBackground in real-time systems or high-frequency trading infrastructure\nKnowledge of hardware clocks, NIC timestamping, or GPS-based timing\nExperience operating large-scale distributed systems in production\nEnjoy\nChallenging projects.\nA friendly and inclusive workplace culture.\nCompetitive compensation.\nA great benefits package.\nCatered lunch.\nCompensation for this position will vary based on the skills and experience you bring, as well as internal equity considerations. For candidates hired at the posted level, the expected base salary range is $150,000 - $230,000. In addition to cash compensation, this role is eligible to participate inthe company’s equity program, which may include stock options granted in accordance with the company’s equity plan and subject to approval and applicable vesting schedules.\n\nClockwork Systems is an equal opportunity employer. We are committed to building world-class teams by welcoming bright, passionate individuals from all backgrounds. All qualified applicants will receive consideration for employment without regard to race, color, ancestry, religion, age, sex, sexual orientation, gender identity or expression, national origin, disability, or protected veteran status. We believe diversity drives innovation, and we grow stronger together.","description_format":"text","description_chars":3534,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Stock options"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["DevOps & Platform Engineering","AI Compute & Inference","High-Performance Computing"],"lifecycle":[{"event":"open","at":"2026-04-10T22:34:36Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 6","filings_12m":6,"filings_prev_12m":2,"green_card_filings_12m":0,"median_offered_wage_usd":152500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":6}],"liveness":{"score":49,"band":"ok","label":"Likely open","p_open":1,"p_active":0.821,"p_room":0.6,"age_days":188,"expected_fill_days":252,"reasons":["conf:1","velocity","win:late","crowd:"],"computed_at":"2026-10-16T05:45:00Z"},"pay":{"stated_usd_annual":230000,"is_top_pay":true},"html_url":"https://alion.io/job/clockwork-senior-software-engineer-time-synchronization","json_url":"https://alion.io/job/clockwork-senior-software-engineer-time-synchronization.json","meta":{"generated_at":"2026-10-16T22:38:52Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":4223,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-17T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":39049},"rest":"https://alion.io/mcp/rest/get_company?id=39049"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fclockwork-senior-software-engineer-time-synchronization"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fclockwork-senior-software-engineer-time-synchronization"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fclockwork-senior-software-engineer-time-synchronization"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/clockwork-senior-software-engineer-time-synchronization\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fclockwork-senior-software-engineer-time-synchronization"}]}